@Jayzee55
You need to call O2 to disable wifi calling on your account before the code will work.
Once you have sent the code, you can re enable wifi calling.
O2 really need to fix this issue as it's been going on for ages.
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
Please select the post that helped you best and mark as the solution. This helps other members in resolving their issues faster. Thank you.
